Let's first consider episodic memory.
Episodic memory will mostly consolidate in long-term memory those events
that are memorable, unexpected or attached with emotion. Associated with those memories might be past decisions and actions, potentially with attached outcomes.
The standard theory assumes that, at some point, episodic memory becomes independent of hippocampus and MTL over a period of weeks to years [1]}, [2]}.
In contrast, the multiple trace theory assumes that both hippocampus and MTL remain involved [3]}, [4]}, [5]}.
From our work, we would propose that indices and embeddings become independent of MTL, but that MTL remains the manager of complex spatial and relational memories [6]}. In particular, the hippocampus is considered to be at the center of a memory system that organizes and reconstructs complex experiences according to their spatiotemporal context.
In general, it is assumed that consolidation involves both MTL and the medial prefrontal cortex (mPFC) [7]}, where the transferred indices might be established [2]}.
After consolidation, episodic memories might be organized in temporal order or according to a similarity in representation (see, Figure REF ).
It is assumed that consolation might be a process executed completely or partially during sleep [9]}.
